switch to eslint flat config

.editorconfig

@@ -0,0 +1,12 @@
+# EditorConfig is awesome: http://EditorConfig.org
+
+# top-most EditorConfig file
+root = true
+
+[*]
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+charset = utf-8
+indent_style = space
+indent_size = 2

.vscode/settings.json

@@ -0,0 +1,3 @@
+{
+  "eslint.experimental.useFlatConfig": true
+}

eslint.config.js

@@ -1,18 +1,11 @@
-"use strict";
+import mod from "@peggyjs/eslint-config/flat/module.js";
 
 export default [
   {
-    files: [
-      "**/*.js", 
+    ignores: [
+      "node_module/**",
+      "**/*.d.ts",
     ],
-    rules: {
-      "comma-dangle": ["error", {
-        arrays: "always-multiline",
-        objects: "always-multiline",
-        imports: "always-multiline",
-        exports: "always-multiline",
-        functions: "never",
-      }],
-    },
   },
-];
+  mod,
+];